[platform/api/test_module]: Increase timeout for test_reboot for t2 (sonic-net#17382)

What is the motivation for this PR?
Test is failing because it is not waiting long enough after reboot

How did you do it?
How did you verify/test it?
ran on arista t2 chassis

Any platform specific information?
t2
Signed-off-by: Liam Kearney <liamkearney@microsoft.com>

Author: liamkearney-msft

tests/platform_tests/api/conftest.py

@@ -22,8 +22,13 @@ def stop_platform_api_service(duthosts):
             # Check if platform_api_server running in the pmon docker and only then stop it. Else we would fail,
             # and not stop on other DUT's
             out = duthost.shell('docker exec pmon supervisorctl status platform_api_server',
-                                module_ignore_errors=True)['stdout_lines']
-            platform_api_service_state = [line.strip().split()[1] for line in out][0]
+                                module_ignore_errors=True)
+
+            # ensure pmon is still up
+            if out.get('stderr_lines') and "Error response from daemon" in out['stderr_lines']:
+                pytest.fail(f"pmon is not running after tests {out['stderr_lines']}")
+
+            platform_api_service_state = [line.strip().split()[1] for line in out['stdout_lines']][0]
             if platform_api_service_state == 'RUNNING':
                 duthost.command('docker exec -i pmon supervisorctl stop platform_api_server')
                 duthost.command('docker exec -i pmon rm -f {}'.format(pmon_path_supervisor))

tests/platform_tests/api/test_module.py

@@ -488,6 +488,9 @@ def test_reboot(self, duthosts, enum_rand_one_per_hwsku_hostname, localhost, pla
         reboot_type = 'default'
         reboot_timeout = 300
 
+        if duthosts[enum_rand_one_per_hwsku_hostname].get_facts().get("modular_chassis"):
+            reboot_timeout = 360
+
         # Extend ignore fabric port msgs for T2 chassis with DNX chipset on Linecards
         ignore_t2_syslog_msgs(duthosts[enum_rand_one_per_hwsku_hostname])